Type-bar cushion.



No. 892,043. PATENTED JUNE 30, 1908. C. G ABRIELSON '& W. H. STEARNS.

TYPE BAR CUSHION. APPLICATION FILED JULY 11, 1904.

I I 1 1 I 0 I I a 0 I I I 0 0 ,0 I

wi/tmme/a UNIT D STATES PATENT OFFICE.

OARLGABRI ELSON, OF SYRACUSE, NEW YORK, AND WILLIAM H. STEARNS, OiWORCESTER,

MASSACHUSETTS, ASSIGNORS TO L. 0. SMITH & BROS. TYPEWRITER COMPANY, OFSYRA- OUSE, NEW YORK, CORPORATION OF NEW YORK.

I TYPE-BAR CUSHION.

i To all whom it mag concern:

Be it known at we, CARL- GABRIELSON and WILLIAM STEARNs, citizens of theUnited States, and residents, respectivel of Syracuse, Onondaga county,State of ew ork, and Worcester, Worcester county, State ofMassachusetts, have invented certain new and useful-1m rovements inType- Bar Cushions, of whic the following is a inelastic to revent anmaterial rebounding of the typear and W 'ch is soft enough to preventany injury to the type-bar or any considerable noise due to the impactof the ty e-bar.

he invention will be described in detail in connection with theaccompanying drawingi in which, a

. igure 1 is a side view of a type-bar cushlon and .its support Fig. 2is a section of the same on the line 22 of Fig. 1 and showing a ty e-barin side elevation; Fig. 3 is a vertica longitudinal section of; thecushion; Fig. 4 is a transverse section of the cushion; and Fig. 5 is asimilar section showing a modification.

Referring to'the drawing, a indicates a type-bar cushion, l the supporttherefor, 2 a type-bar and 3 its hanger. The support 1 may be of anysuitable construction and its form is immaterial so far as the presentinvention is concerned. The character of the machine, whethenthe same bea front-strike machine or otherwise, is also immaterial.

The cushion a comprises a sefies of consecutive superposed layers 4 offabric preferablycovered by an envelop or jacket 5. The

Specification of Letters Patent. Application filed July 11', 1904.Serial No. 216,352.

strips bein Patented June 30, 1908.

cushion shown in Figs: 3 and 4 consists of a series of stri s laid oneon the other, said filled or saturated with viscous material w ichcauses them to adhere more or less and also destroys or decreases thenatural elasticit 0f the fabric. In practice it has been foun that theadhesive tape used by electricians when arranged in layers, as shown inthe drawing, forms a very-effective cushion. The adhesive properties ofthe tape serve to hold the layers of fabric in proper relative position,but non-adhesive viscous material may be used with good re sults. Thesaturating material should be of a kind which will not evaporatereadily, and to revent drying out and also to form a suitabl ie finishfor the pad, it is covered by an envelop 5 which is preferablyconstructed of some tough air and water proof fabric. As shown in Fig. 4the envelop consists of a strip having its edges united at 6 by sewingor otherwise.

In Fig. Sthere is shown a ad made up of a sin lc p ece of fabric 7 foldeupon itself back an forth to form a cushion of thedesired depth. Thiscushion is surrounded by a continuous envelop 8.

It is Well known that the speed with which a ty ewriting machine may beoperated depen s somewhat upon the effectiveness of the pad forpreventing rebound of the typebar. If the pad be elastic the bar wouldre quire some time to come to rest and if an adjacent bar be operatedbefore it comes to rest the two may collide, causing loss of time andossible injury to the type-bars. The pad herein described has beenthoroughly tested and found to be very effective.

It will be evident that the invention is not limited to any particularfabric or to any particular saturating material. It is to be understoodhowever that in the preferred form of our invention 'we use a series oflayers of fabric treated with adhesive material, which co-here and forma solid pad.

Having described our invention what We i In testimony whereof We havesigned our desire to secure by Letters Patent is, l

l two subscribing witnesses. i CARL GABRIELSON.

VILLIAM H. STEARN S.

'itnesses for Carl Gabrielson:

C. M.STEVENS,- C, FPARsoNs.

fitnesses for Villiam H. Stearns:

E. H. CRAX ELL, Jr.,

FRED D. JOHNSON.

1. type-bar pad comprising a series of superposed .layers of textilefabric having viscous material incorporated therewith, and an inclosingenvelo of substantially air and Waterproof inateria v 2. A ty)ebar padcomprising a series of su erposed layers of textile fabric having adiesive and viscous material incorporated therewith, and an envelopsurround1ng and inclosiug said layers.

names tothis specification in the presence of

